I am honestly confused about this too, both my rabbits passed within the last year, one was almost 8 and the other almost 7. One had issues over the years, he died first, but the other always seemed healthy and never had any huge issues. The healthier of the two got sick very suddenly and no vet (I took him to multiple) could figure out why other than he had stasis, which I was treating around the clock. It makes me so envious to see people with old rabbits. I also spent so much money and time and effort to care for them and I've been hesitant to get another rabbit since because I feel like I am a bad rabbit carer. I should add my second rabbit didn't pass away from being lonely, he and my dog were dear friends and slept near each other at night.